Home > Neutreeko > Puzzles > Hard 4001-4250
| 1. a3-b2, | 2. c5-a3, | 3. e3-b3, | 4. a1-b1, | 5. c1-c5, | 6. a3-a1, | 7. b3-a3 |
| 1. a3-b2, | 2. c5-a3, | 3. e3-b3, | 4. a1-b1, | 5. c1-c5, | 6. a3-a1, | 7. c5-c1 |
| 1. a3-b2, | 2. c5-a3, | 3. e3-b3, | 4. a1-b1, | 5. c1-c5, | 6. a3-a5, | 7. b3-a3 |
| 1. a3-b2, | 2. c5-a3, | 3. e3-b3, | 4. a1-b1, | 5. c1-c5, | 6. a3-a5, | 7. c5-b5 |
| 1. a3-b2, | 2. c5-a3, | 3. e3-b3, | 4. a1-b1, | 5. c1-c5, | 6. a3-a5, | 7. c5-c1 |
| 1. a3-b2, | 2. c5-a3, | 3. e3-b3, | 4. a1-b1, | 5. c1-c5, | 6. a3-b4, | 7. b3-a3 |
| 1. a3-b2, | 2. c5-a3, | 3. e3-b3, | 4. a1-a2?, | 5. b2-b1 | ||
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| 1. c1-b2?, | 2. c5-c1 | (black wins in 15 moves) | ||||
| 1. e3-d4?, | 2. a1-c3 | (black loses in 20 moves) | ||||
| 1. e3-e5?, | 2. a1-d4 | (black loses in 16 moves) | ||||